moving forward PR58032

[r0ller <r0ller%freemail.hu@localhost>]

Hi All,

I'd gladly help in moving PR58032 
(https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=58032) 
forward as I can reproduce it on my box even with 10.1. The only thing I 
have to do is to use a custom kernel with amdgpu driver instead of 
radeon for my R9 Nano, boot into single user mode (normal boot does not 
get to the login), issue 'mount -a' and then startx. If there's anyone 
who can provide me instructions to produce useful diagnostics, I'm 
willing to do that.

Best regards,
r0ller